4 Using the PVA-600 Software
4-29
15.
Click on the
Verify
tab to view the numeric
Performance Factor
value as shown
in Figure 37. The
Performance Factor
is the ratio of actual to predicted maximum
power as a percentage.
Figure 37. Performance Factor value
16.
Pause the measurement sequence of the PVA-600 by pressing the power button
shown in Figure 33.
WARNING
Do not disconnect from the tested string unless the red power button is turned off.
17.
Disconnect from the tested string and connect to the next string to be measured.
18.
Repeat the process for each string to be measured.
Saving Data to a Directory Tree
To streamline the process of saving I-V data to your PC, create a directory tree before
going to the job site. The directory tree is a nested set of folders that has the same
structure as the PV array to be tested.
Then, when saving an I-V trace on-site, just direct the Save File dialog box to the
appropriate folder. Name each I-V file with the string number of the PV string being
tested. The file extension .csv will be appended automatically.
Figure 38 is an example of a directory tree for a PV system with 6 inverters, two
combiner boxes per inverter, and 22 strings per combiner box.
